[Mgs] FYI

[Max Heim]

That makes sense. Here on the edge of San Francisco Bay, the temperatures are generally quite moderate. Even during this recent heat wave, they only reached 90º for a couple of days.

As for losing grip, I have noticed that phenomenon in other cases, but I’m not really aware of it on this set, yet. My previous tires were summer high performance tires with insane grip (but which became dangerously slick if they even splashed through a puddle). These are all-season M+S tires, so it’s not like they theoretically had a lot of grip to start with, but I really can’t recall ever spinning a tire or skidding under any circumstances other than crossing a painted stripe in the rain.

I recently replaced the 12-year-old Pirellis on my wife’s Echo, and they had noticeably lost grip, to the point that you could spin a front tire just pulling away from a stop (actually, this is not that surprising since the 1.5 has more torque than the MGB motor and the 5-speed has a ridiculously low first gear ratio, to which you add typical FWD torque steer). They also had obvious cracking on the sidewalls. They still had tread because her commute over their lifespan had only been a 2-mile round trip.

--
Max Heim
'66 MGB

> On Jul 24, 2023, at 10:27 AM, Robert's New iPad <mgbobh at gmail.com> wrote:
> 
> 	I suggest that there is a temperature component to tire life.  Tires used as little as Max’s have been would, it seems to me, be OK at present age if they had been stored in a refrigerator.  
> 	My observation of tires on MGB and truck when I moved to CT from FL is that the tires did not appear to age as quickly in CT.   I did—tires didn’t.   When replaced at 12 years, though, the difference in cornering grip was notable. 
> Bob
> 
> 
> On Jul 24, 2023, at 12:23 PM, Max Heim <mvheim at sonic.net <mailto:mvheim at sonic.net>> wrote:
> 
>> It just occurred to me that I bought my current tires for my previous car, which left the premises in 2018, and was in a state of disassembly for 3 or 4 years before that. So they might date back to 2014 or even 2012. Still at least 70% tread left and the sidewalls look fine with no cracking. They have always been parked out of the sun under a carport with a car cover. I am not too concerned about sudden failure since they contain inner tubes.
>> 
>> I did once have an abrupt deflation incident with a previous set due to highway debris, but didn’t have any trouble keeping the car under control, and I changed to the spare on the roadside.
>> 
>> --
>> Max Heim
>> '66 MGB
>> 
>>> On Jul 24, 2023, at 12:16 AM, PaulHunt73 <paulhunt73 at virginmedia.com <mailto:paulhunt73 at virginmedia.com>> wrote:
>>> 
>>> I'm amazed Leno as a car buff didn't already know that.
>>> 
>>> Many 'authorities' advise that a tyre should be examined closely at 5 years and replaced when it reaches 10 years old irrespective of wear.  This tyre was 12 years old but had only done 18k.  Certainly not mileage expired and if just 2 years over the 'recommended' change point is enough to cause this then I suggest it was either faulty or they are just not made to the standards they used to be.  Falken Sincera.
>>> 
>>> http://www.mgb-stuff.org.uk/tyre2.htm <http://www.mgb-stuff.org.uk/tyre2.htm>
>>> On 23/07/2023 17:42, dave northrup wrote:
>>>> Old tires
>>>>  
>>>> https://www.hagerty.com/media/opinion/jay-leno-needs-about-1200-tires/?fbclid=IwAR0aJAQN-C30NTKlLn1vLPUQMbSRidtpY6T_3TcvU9ERlvIxC21zB5vsVbQ <https://www.hagerty.com/media/opinion/jay-leno-needs-about-1200-tires/?fbclid=IwAR0aJAQN-C30NTKlLn1vLPUQMbSRidtpY6T_3TcvU9ERlvIxC21zB5vsVbQ>
>>>>  
>>>>  

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